A nozzle detection device

Abstract

The present invention relates to the technical field of nozzle processing, and particularly relates to a nozzle detection device, which includes a base provided with a liquid through-hole, the liquid through-hole being connected to a pressure detection gauge and a safety valve; wherein, the liquid through-hole includes a liquid inlet end and a liquid outlet end; and a nozzle fixing mechanism disposed in the liquid outlet direction of the liquid through-hole. In the present invention, the base is provided with a liquid through-hole. By connecting a liquid supply device and a nozzle to be measured to the two ends of the liquid through-hole respectively, pressurized liquid is provided by the liquid supply device to flow through the liquid through-hole and into the nozzle for spraying. During the test, the liquid pressure in the liquid through-hole is monitored in real time by the pressure detection gauge to determine whether the nozzle is blocked, resulting in an increase in the liquid pressure in the liquid through-hole. When the pressure in the liquid through-hole is too high, overload protection is achieved through the safety valve to prevent damage to the liquid supply device caused by overload operation due to nozzle blockage or poor structure.

Description

Technical Field

[0001] The present invention relates to the technical field of nozzle processing, and particularly to a nozzle detection device. Background Art

[0002] In the prior art, in the field of precision manufacturing and processing of nozzles, nozzles with extremely small apertures are installed at the injection terminals of nozzles. Due to the high precision of the nozzles, if the pipeline structure is poor due to processing problems, foreign objects or other reasons cause the nozzles to be blocked and directly put into use, it will cause damage due to excessive pressure inside the pipeline due to blockage, and it is easy to cause the liquid supply equipment in the rotational working state to be overloaded, resulting in abnormal wear and the equipment failure and inability to use. Therefore, it is necessary to detect whether the produced nozzles are qualified to fill the blank in the field of nozzle testing. Summary of the Invention

[0003] The purpose of the present invention is to provide a nozzle detection device for detecting whether a nozzle is blocked due to poor structure, foreign objects or other reasons.

[0004] To achieve the above purpose, the present invention provides a nozzle detection device, including:

[0005] A base, which is provided with a liquid through hole, and the liquid through hole is connected with a pressure detection table for detecting the pressure of the liquid through hole and a safety valve for preventing the liquid supply equipment from being overloaded;

[0006] Wherein, the liquid through hole includes a liquid inlet end for connecting with a liquid inlet device and a liquid outlet end for connecting with a nozzle to be measured;

[0007] A nozzle fixing mechanism, which is arranged in the liquid outlet direction of the liquid through hole for reliably connecting the nozzle to be measured with the liquid through hole.

[0008] Optionally, the base is provided with a first connection hole and a second connection hole coaxially arranged with the liquid through hole. The first connection hole is arranged at the liquid inlet end for sealingly sleeving the liquid inlet pipe of the liquid inlet device, and the second connection hole is arranged at the liquid outlet end for sealingly sleeving the liquid inlet pipe of the nozzle to be measured.

[0009] Optionally, the first connection hole is sleeved with a liquid inlet joint. An annular boss is arranged on the outer side of the liquid inlet joint. The base is provided with a positioning groove, and a stop block is slidably inserted into the positioning groove. The stop block is provided with a first U-shaped groove, and one end face of the first U-shaped groove forms interference with the annular boss for restricting the axial movement of the liquid inlet joint.

[0010] Optionally, the nozzle fixing mechanism includes:

[0011] A locking block;

[0012] A rotary pressing block rotatably connected to a locking block, the rotary pressing block being provided with a second U-shaped groove for restricting the axial movement of a measured nozzle communicating with the liquid through hole.

[0013] Optionally, the nozzle fixing mechanism further includes a locking rod, the locking block is provided with at least one locking hole, and the locking rod passes through the locking hole and is connected to the rotary pressing block.

[0014] Optionally, the rotary pressing block is provided with a positioning hole for sleeving the locking rod.

[0015] Optionally, the rotary pressing block is provided with a clamping groove for clamping the locking rod.

[0016] Optionally, one end of the locking hole is provided with a locking groove arranged along the radial direction of the locking hole, and the locking rod is provided with a guide rod for being embedded in the locking groove.

[0017] Optionally, a first limiting portion is formed by a protrusion on the outer side surface of the locking rod, a second limiting portion is formed by a protrusion on the inner side wall of the locking hole, and a spring is arranged between the first limiting portion and the second limiting portion and sleeved on the locking rod.

[0018] Optionally, the locking rod is provided with a limiting hole arranged along the axial direction of the locking rod, a positioning pin hole with an axis perpendicular to the axis of the locking hole is arranged in the locking hole, and a positioning pin is inserted in the positioning pin hole, and one end of the positioning pin is arranged in the limiting hole.

[0019] Optionally, the rotary pressing block includes a nozzle pressing plate and a positioning pressing plate, at least one side end of the nozzle pressing plate is connected with the positioning pressing plate, and the locking rod is connected with the positioning pressing plate.

[0020] Optionally, it further includes:

[0021] A substrate, the locking block is detachably installed on the substrate, and the base is detachably installed on the locking block;

[0022] Support feet, installed under the substrate for supporting the substrate.

[0023] Optionally, it further includes a cushion block for supporting the measured nozzle, and the cushion block is provided with a positioning groove for placing the measured nozzle.

[0024] Implementing the embodiments of the present invention has the following technical effects:

[0025] The present invention realizes the qualified test of the nozzle at the factory, prevents the overloading damage of the liquid supply equipment during the working process caused by nozzle blockage or poor nozzle structure, reduces the abnormal wear and mechanical failures of the liquid supply equipment, and improves the safety and reliability of use; a liquid through-hole is opened in the base of the present invention. By connecting the liquid supply equipment and the nozzle under test to both ends of the liquid through-hole respectively, the pressurized liquid provided by the liquid supply equipment flows through the liquid through-hole and enters the nozzle for spraying. During the test, the liquid pressure in the liquid through-hole is monitored in real time through a pressure detection table to determine whether the nozzle is blocked, resulting in an increase in the liquid pressure in the liquid through-hole, and an overload protection is realized through a safety valve when the pressure in the liquid through-hole is too high, preventing the overload damage of the liquid supply equipment caused by nozzle blockage or poor structure. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the preferred embodiment of the present invention connected to the nozzle under test;

[0027] Figure 2 is a top view of the preferred embodiment of the present invention;

[0028] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0029] Figure 4 is Figure 3 a partial enlarged view at A in

[0030] Figure 5 is Figure 2 a cross-sectional view taken along line B-B in

[0031] Figure 6 is an exploded view of the preferred embodiment of the present invention;

[0032] Figure 7 is an exploded view of the preferred embodiment of the present invention from another perspective.

[0033] Description of the Reference Numerals:

[0034] 1. Base, 11. Liquid through-hole, 12. First connection hole, 13. Second connection hole, 14. Liquid inlet joint, 141. Annular boss, 142. Sealing ring, 15. Positioning groove, 16. Stop block, 161. First U-shaped groove;

[0035] 2. Pressure detection table connector;

[0036] 3. Safety valve;

[0037] 4. Nozzle fixing mechanism, 41. Locking block, 411. Locking hole, 412. Locking groove, 413. Second limiting part, 414. Positioning pin hole, 42. Rotating pressing block, 421. Positioning hole, 422. Card slot, 423. Nozzle pressing plate, 424. Positioning pressing plate, 425. Second U-shaped groove, 43. Locking rod, 431. First limiting part, 432. Limiting hole, 44. Guide rod, 45. Spring, 46. Spherical handle;

[0038] 5. Substrate;

[0039] 6. Support feet;

[0040] 7. Spacer block, 71. Positioning groove;

[0041] 8. Rubber feet;

[0042] 9. Nozzle under test. Detailed implementation manners

[0043] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0045] In addition, the terms "first", "second", etc. are used in the present invention to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0046] Reference Figure 1 - Figure 7 , this embodiment provides a nozzle detection device, including:

[0047] Base 1, which is provided with a liquid through hole 11. The liquid through hole 11 is connected with a pressure detection table (not shown in the figure) for detecting the pressure of the liquid through hole 11 and a safety valve 3 for preventing the liquid supply device from being overloaded. Specifically, in this embodiment, the pressure detection table is connected to the liquid through hole 11 through a pressure detection table connector 2;

[0048] Among them, the liquid through hole 11 includes a liquid inlet end for connecting with a liquid inlet device and a liquid outlet end for connecting with the nozzle under test 9;

[0049] The nozzle fixing mechanism 4 is arranged at the liquid outlet end for reliably connecting the nozzle under test 9 with the liquid through hole 11.

[0050] The present invention realizes the qualified test of the nozzle before leaving the factory, prevents the liquid supply equipment from being overloaded and damaged during the working process due to nozzle blockage or poor nozzle structure, reduces the abnormal wear and mechanical failures of the liquid supply equipment, and improves the safety and reliability of use; a liquid through hole 11 is opened in the base 1 of the present invention. By respectively connecting the liquid supply equipment and the nozzle under test 9 to both ends of the liquid through hole 11, the pressurized liquid provided by the liquid supply equipment flows through the liquid through hole 11 and enters the nozzle for spraying. During the test process, the liquid pressure in the liquid through hole 11 is monitored in real time through the pressure detection table to judge whether the nozzle is blocked, resulting in an increase in the liquid pressure in the liquid through hole 11. When the pressure in the liquid through hole 11 is too high, the overload protection is realized through the safety valve 3 to prevent the liquid supply equipment from being damaged due to overload operation caused by nozzle blockage or poor structure.

[0051] Reference Figure 1 、 Figure 6 and Figure 7 In order to facilitate the detection of nozzles of different specifications, the base 1 of this embodiment is detachably installed on the locking block 41, which is convenient for disassembling and assembling the mounting seat with different specifications of liquid through holes 11 and positioning grooves 15 on the support seat, so as to flexibly assemble and adapt to nozzles of different specifications for detection and reduce the detection cost.

[0052] Reference Figure 4 Furthermore, in order to improve the reliability of the connection between the liquid through hole 11 and the liquid supply equipment and the nozzle under test 9, the mounting seat is provided with a first connection hole 12 and a second connection hole 13 coaxially arranged with the liquid through hole 11. The first connection hole 12 is arranged at the liquid inlet end for sealingly sleeving the liquid inlet pipe of the liquid inlet equipment, and the second connection hole 13 is arranged at the liquid outlet end for sealingly sleeving the liquid inlet pipe of the nozzle under test 9.

[0053] A liquid inlet joint 14 is sleeved in the first connection hole 12 for facilitating the connection of the liquid supply equipment. An annular boss 141 is arranged on the outer side of the liquid inlet joint 14. The mounting seat is provided with a positioning groove 15. A stop block 16 is slidably inserted into the positioning groove 15. The stop block 16 is provided with a first U-shaped groove 161. One end face of the first U-shaped groove 161 forms an interference with the annular boss 141 for restricting the axial movement of the liquid inlet joint 14 and improving the sealing performance of the liquid inlet joint 14. It can be understood that the liquid inlet joint 14 can be disassembled and assembled by sliding the stop block 16, so as to select different specifications of liquid inlet joints 14 to adapt to the liquid outlet end of the liquid supply equipment.

[0054] In order to further improve the sealing effect between the liquid inlet joint 14 and the first connection hole 12 and prevent leakage from affecting the detection accuracy, the liquid inlet joint 14 is provided with an annular groove, and an O-ring 142 is sleeved in the annular groove. The outer diameter end face of the O-ring 142 protrudes from the open end of the annular groove.

[0055] Reference Figure 1 , Figure 6 and Figure 7 , further, the nozzle fixing mechanism 4 of this embodiment includes:

[0056] A locking block 41 and a rotary pressing block 42 rotatably connected to the locking block 41. The rotary pressing block 42 is provided with a second U-shaped groove 425 for restricting the axial movement of the measured nozzle 9 communicating with the liquid through hole 11. By inserting the nozzle joint into the second U-shaped groove 425, it can be understood that the width of the second U-shaped groove 425 is set to be smaller than the diameter of the nozzle joint and larger than the diameter of the thin tube of the nozzle, thereby restricting the axial movement of the measured nozzle.

[0057] The nozzle fixing mechanism 4 of this embodiment further includes a locking rod 43. The locking block 41 is provided with at least one locking hole 411. The locking rod 43 passes through the locking hole 411 and is connected to the rotary pressing block 42. Since the rotary pressing block 42 of this embodiment includes a nozzle pressing plate 423 and a positioning pressing plate 424, and the two side ends of the nozzle pressing plate 423 are connected with the positioning pressing plate 424, therefore, this embodiment includes two locking holes 411, and the two locking holes 411 are respectively inserted with the locking rod 43. Two groups of positioning pressing plates 424 connected to the two side ends of the nozzle pressing plate 423 are respectively provided with a positioning hole 421 for sleeving with the locking rod 43 and a clamping groove 422 for clamping with the locking rod 43, improving the stability of the rotary pressing block 42 for locking the measured nozzle 9;

[0058] Reference Figure 3 and Figure 4 , wherein, a first limiting portion 431 is formed by the outer side surface of the locking rod 43 inserted in one of the locking holes 411 protruding, and a second limiting portion 413 is formed by the inner side wall of the locking hole 411 protruding. A spring 45 is provided between the first limiting portion 431 and the second limiting portion 413 and sleeved on the locking rod 43. Thus, when the locking rod 43 moves axially, it can be automatically reset under the action of the spring 45. In addition, one end of the locking hole 411 is provided with a locking groove 412 arranged radially along the locking hole 411. The locking rod 43 is provided with a guiding rod 44 for being embedded in the locking groove 412. When the locking rod 43 is moved a certain distance and then rotated, the guiding rod 44 is made to abut against the end face of the locking groove 412 to prevent the locking rod 43 from resetting. After waiting to install the measured nozzle 9, the locking rod 43 is rotated to reset and then passes through the positioning hole 421 to realize the locking of the rotary pressing block 42 and the measured nozzle 9;

[0059] Reference Figure 5 - Figure 7, Further, a locking rod 43 inserted into another locking hole 411 is provided with a limiting hole 432 arranged along the axial direction of the locking rod 43. A positioning pin hole 414 with an axis perpendicular to the axis of the locking hole 411 is opened in the locking hole 411. A positioning pin is inserted into the positioning pin hole 414, and one end of the positioning pin is arranged in the limiting hole 432. Thus, when the locking rod 43 is moved, the moving range of the locking rod 43 is limited, facilitating accurate operation of the moving distance of the locking rod 43. The locking rod 43 is moved to the position of the locking and positioning pressing plate 424 and is clamped with the clamping groove 422, realizing the locking and fixing of the rotating pressing block 42 and the measured nozzle 9.

[0060] Specifically, one end of the locking rod 43 in this embodiment is provided with a spherical handle 46, which is convenient for hand operation.

[0061] Among them, in order to facilitate the stable placement and overall movement of the nozzle detection device, this embodiment further includes:

[0062] A substrate 5, and the locking block 41 is detachably installed on the substrate 5;

[0063] Support feet 6, installed under the substrate 5 for supporting the substrate 5.

[0064] Further, the lower end of the support feet 6 is provided with rubber feet 8, which play a role in anti-slip and anti-vibration.

[0065] Among them, in order to ensure the stability of the measured nozzle 9 during the detection process, this embodiment further includes a cushion block 7 for supporting the measured nozzle 9. The cushion block 7 is provided with a positioning groove 71 for placing the measured nozzle 9, avoiding the bending of the nozzle under its own weight and affecting the detection result, and improving the detection accuracy.

[0066] The operation steps of the present invention are as follows:

[0067] Pull one of the locking rods 43 and rotate it to stay on the side of the locking block 41 to prevent it from returning. Pull the other locking rod 43 and rotate the rotating pressing block 42;

[0068] Connect the liquid supply device to the liquid inlet joint 14 of the first connection hole 12, insert the tail of the measured nozzle 9 into the second connection hole 13, rotate the rotating pressing block 42, so that the tail of the measured nozzle 9 is clamped into the second U-shaped groove 425. During the rotation of the rotating pressing block 42, the tail of the measured nozzle 9 is gradually pressed towards the direction of the second connection hole 13, and the axial movement of the measured nozzle 9 is restricted by the side end surface of the second U-shaped groove 425;

[0069] Reset the two locking rods 43, so that the two locking rods 43 respectively pass through the positioning holes 421 and are clamped into the clamping grooves 422, realizing the locking of the rotating pressing block 42;

[0070] Start the liquid supply device, and perform structural and functional detections on the measured nozzle 9 at multiple different gears respectively;

[0071] Among them, the liquid supply device pumps aseptic liquid, such as aseptic physiological saline, to the nozzle 9 to be measured, and after injecting from the liquid inlet joint 14 under high-pressure conditions, it flows into the through hole of the liquid 11 and the nozzle 9 to be measured in sequence. At this time, by detecting the pressure value of the pressure detection gauge and the pressure value of the qualified nozzle under this test condition, it is judged whether the nozzle 9 to be measured is qualified.

[0072] The present invention realizes the qualified test of the nozzle before leaving the factory, prevents the overload damage of the liquid supply device during the working process caused by nozzle blockage or poor nozzle structure, reduces the abnormal wear and mechanical failures of the liquid supply device, and improves the safety and reliability of use; a liquid through hole 11 is opened in the base 1 of the present invention. By connecting the liquid supply device and the nozzle 9 to be measured to both ends of the liquid through hole 11 respectively, pressurized liquid provided by the liquid supply device flows through the liquid through hole 11 and into the nozzle for spraying. During the test, the liquid pressure in the liquid through hole 11 is monitored in real time through the pressure detection gauge to judge whether the nozzle is blocked, resulting in an increase in the liquid pressure in the liquid through hole 11, and when the pressure in the liquid through hole 11 is too high, overload protection is realized through the safety valve 3 to prevent the overload damage of the liquid supply device caused by nozzle blockage or poor structure.

[0073] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A nozzle detection device, characterized in that, it includes: A base, which is provided with a liquid through-hole, and the liquid through-hole is connected with a pressure detection gauge for detecting the pressure of the liquid through-hole and a safety valve for preventing the liquid supply equipment from overloading; Wherein, the liquid through-hole includes a liquid inlet end for connecting with a liquid inlet device and a liquid outlet end for connecting with a nozzle to be detected; A nozzle fixing mechanism, which is arranged in the liquid outlet direction of the liquid through-hole for connecting the nozzle to be detected with the liquid through-hole; The nozzle fixing mechanism includes: A locking block; A rotating pressing block rotatably connected to the locking block, and the rotating pressing block is provided with a second U-shaped groove for restricting the axial movement of the nozzle to be detected communicating with the liquid through-hole; The nozzle fixing mechanism further includes a locking rod, the locking block is provided with two locking holes, and the two locking holes are respectively inserted with the locking rod; The rotating pressing block is provided with a positioning hole for sleeving one of the locking rods; The rotating pressing block is provided with a clamping groove for clamping with the other locking rod; The base is provided with a first connection hole and a second connection hole coaxially arranged with the liquid through-hole, the first connection hole is arranged at the liquid inlet end for sealingly sleeving the liquid inlet pipe of the liquid inlet device, and the second connection hole is arranged at the liquid outlet end for sealingly sleeving the liquid inlet pipe of the nozzle to be detected; The first connection hole is sleeved with a liquid inlet joint, an annular boss is arranged on the outer side of the liquid inlet joint, the base is provided with a positioning groove, a stop block is slidably inserted into the positioning groove, the stop block is provided with a first U-shaped groove, and one end face of the first U-shaped groove forms interference with the annular boss for restricting the axial movement of the liquid inlet joint.

2. The nozzle detection device according to claim 1, characterized in that, One end of the locking hole is provided with a locking groove arranged along the radial direction of the locking hole, and the locking rod is provided with a guiding rod for being embedded in the locking groove.

3. The nozzle detection device according to claim 2, characterized in that, A first limiting portion is formed by protruding on the outer side surface of the locking rod, a second limiting portion is formed by protruding on the inner side wall of the locking hole, and a spring is arranged between the first limiting portion and the second limiting portion and sleeved on the locking rod.

4. The nozzle detection device according to claim 2, characterized in that, The locking rod is provided with a limiting hole arranged along the axial direction of the locking rod, a positioning pin hole with an axis perpendicular to the axis of the locking hole is arranged in the locking hole, and a positioning pin is inserted into the positioning pin hole, and one end of the positioning pin is arranged in the limiting hole.

5. The nozzle detection device according to claim 1, characterized in that, The rotating pressing block includes a nozzle pressing plate and a positioning pressing plate, at least one side end of the nozzle pressing plate is connected with the positioning pressing plate, and the locking rod is connected with the positioning pressing plate.

6. The nozzle detection device according to claim 1, characterized in that, It further includes: A substrate, the locking block is detachably installed on the substrate, and the base is detachably installed on the locking block; Support feet, installed under the substrate for supporting the substrate.

7. The nozzle detection device according to claim 1, characterized in that, It further includes a cushion block for supporting the nozzle under test, and the cushion block is provided with a positioning groove for placing the nozzle under test.

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